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Transformation of chlorophyll a during viral infection of Emiliania huxleyi
Bale, N.J.; Airs, R.L.; Kimmance, S.A.; Llewellyn, C.A. (2013). Transformation of chlorophyll a during viral infection of Emiliania huxleyi. Aquat. Microb. Ecol. 69(3): 205-210. dx.doi.org/10.3354/ame01640
In: Aquatic Microbial Ecology. Inter-Research: Oldendorf/Luhe. ISSN 0948-3055, more
Peer reviewed article  

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Keyword
    Emiliania huxleyi (Lohmann) W.W.Hay & H.P.Mohler, 1967 [WoRMS]
Author keywords
    Viral infection; Emiliania huxleyi; Chlorophyll a; Transformationproducts; Oxidative transformation

Authors  Top 
  • Bale, N.J., more
  • Airs, R.L.
  • Kimmance, S.A.
  • Llewellyn, C.A., more

Abstract
    Although viruses can significantly reduce primary production-mediated carbon cycling, the effect of viral infection on the principal photosynthetic pigment that enables autotrophic production, chlorophyll a (chl a), remains unresolved. We compared the production of chl a transformation compounds in Emiliania huxleyi cultures undergoing viral infection with that in control cultures left to decline in the stationary phase of growth. A high performance liquid chromatography mass spectrometry method developed for the detection of Type I chl a transformation products was used. A rapid decline in cellular concentrations of chl a, C-13(2) diastereomer of chl a (chl a') and phaeophytin a (phytin a) was observed in both infected and control cultures. The most notable finding was the significant increase in the cellular concentrations of Type I chl oxidation products (allomers) in the infected cultures, and we hypothesise that this may be due to increased oxidative stress and reactive oxygen species.

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